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Poclain Hydraulics Industrie patents


Recent patent applications related to Poclain Hydraulics Industrie. Poclain Hydraulics Industrie is listed as an Agent/Assignee. Note: Poclain Hydraulics Industrie may have other listings under different names/spellings. We're not affiliated with Poclain Hydraulics Industrie, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "P" | Poclain Hydraulics Industrie-related inventors


Harmonic distribution radial piston hydraulic machine

The hydraulic machine includes a cam and a cylinder block with pistons co-operating with cam lobes, each of which has two ramps extending between top and bottom dead center arcs. The cylinders are connected in alternation to a feed and to a discharge, in sequences separated by switchover stages including an isolation stage during which they are isolated relative to the feed and discharge main ducts. ... Poclain Hydraulics Industrie

Hydraulic-assistance system for open-circuit motor vehicles

The present invention relates to a hydraulic-assistance system for motor vehicles, comprising a primary motor (m) and two hydraulic machines (140; 240, 250) connected by a hydraulic circuit such that when a first hydraulic machine (140) operates as a pump, the second hydraulic machine (240, 250) operates as a motor. The invention is characterized in that the hydraulic circuit connecting the two machines (140; 240, 250) is an open circuit passing through a tank (300), the hydraulic machine (240, 250) operating as a motor is a declutchable machine, and the hydraulic machine (140) operating as a pump is a pump in which the variable displacement is controlled by a device comprising a proportional pressure limiter (470) placed between a drain line (143) and the discharge line of the hydraulic machine (140) operating as a pump, and enabling the assistance pressure to be set, and at least one collection nozzle (460) placed between the proportional pressure limiter (470) and the discharge line of the hydraulic machine (140), the setpoint pressure controlling the hydraulic machine (140) operating as a pump being collected between the pressure limiter (470) and the collection nozzle (460).. ... Poclain Hydraulics Industrie

Braking system for a hydraulic machine

A hydraulic machine (1) comprising first and second brake elements (92, 93), a spring washer (65) tending to urge the first and second brake elements (92, 93) in a braking direction, and a brake release piston (61) configured to act on the spring washer (65) in a direction opposing the braking direction, the hydraulic machine being characterized in that the brake release piston (61) comprises a primary brake release piston (61a) associated with a primary brake release chamber (62a), and a secondary brake release piston (61b) associated with a secondary brake release chamber (62b), said primary and secondary chambers (62a, 62b) extending radially around the shaft (2) in such a manner that projections of the primary brake release chamber (62a) and of the secondary brake release chamber (62b) onto a plane perpendicular to a longitudinal axis (x-x) defined by the axis of rotation of the hydraulic machine (1) are superposed, at least in part.. . ... Poclain Hydraulics Industrie

Vehicle-mounted hydraulic assistance device and method for evacuating such a device

The invention relates to a device comprising a first hydraulic apparatus (m1) and a second hydraulic apparatus (m2), the two motors (m1, m2) being connected by a first line (11) and a second line (12) enabling the admission or discharge of the oil in said motors (m1, m2), a booster pump (30), arranged between a tank and a booster line, the booster line communicating with at least one of said lines (11, 12), characterised in that the pump (30) is configured to be able to suck oil into the booster line in order to allow the decompression of said first and second lines (11, 12). The invention also relates to a method for evacuating a device of the type described above, in which the booster pump (30) is activated in suction mode in the booster line to enable the disengagement of the machines (m1, m2).. ... Poclain Hydraulics Industrie

Power steering braking valve

A braking circuit including at least an auxiliary right valve (200) and an auxiliary left valve (300) suitable to allow braking on both sides, right and left of a vehicle, when this is required, but allowing to apply a pressure braking only on one of the two sides, right or left, when this is required to provide a steering function, characterized in that the circuit further comprises a master valve (400) having two positions: a first position when the vehicle has a velocity under a threshold wherein separate and selective right or left braking is authorized and a second position when the vehicle has a velocity above said threshold wherein said master valve (400) connects both a right braking line (204, 1205) and a left braking line (304, 1305) to an output braking line (110) so that if a braking is requested both right braking line (204, 1204) and left braking line (304, 1305) are under pressure and selective right or left braking is forbidden.. . ... Poclain Hydraulics Industrie

Braking system for a hydraulic machine

A hydraulic apparatus comprising a casing (1) having arranged therein a hydraulic machine (2), a shaft (4) mounted to rotate relative to the casing (1) by means of a bearing (5), a braking system (3) having a plurality of brake disks (31, 34) configured to prevent the shaft (4) rotating relative to the casing (1) in selective manner, and a control system (6, 7) for controlling said braking disks (31, 34), the hydraulic system including an irrigation system adapted to cool said brake disks (31, 34) by means of a fluid, the irrigation system including a fluid inlet (81) and a fluid outlet (82), the hydraulic system being characterized in that the fluid inlet and outlet (81, 82) of the irrigation system define a fluid flow within the casing in which the braking system (3) is downstream from the hydraulic machine (2).. . ... Poclain Hydraulics Industrie

Hydraulic torque motor

An assembly (20) comprising a radial piston hydraulic motor (10), comprising a fixed housing (15), a shaft (14) that can be driven in rotation by the hydraulic motor (10), a wheel hub (30) comprising a hub barrel (31) that engages on the shaft (14), a bearing (40), a bearing support (41), in which the bearings (40) are housed between the hub barrel (31) and the bearing support (41) of the hydraulic motor (10), the bearing support (41) forming part of the housing (15), such that the bearing function is carried out by the housing (15), the shaft (14) supporting only the weight of same and having only a torque function.. . ... Poclain Hydraulics Industrie

Selection system having improved axial locking

A selection system, comprising: a sheath defining an internal housing extending in a longitudinal direction; a link rod disposed in said internal housing, and extending in the longitudinal direction; and a selection slide mounted to slide in the internal housing, about the link rod; the link rod being held stationary relative to the sheath against movement in translation in the longitudinal direction by stop means; the system being characterized in that the stop means comprise: a base that is a body of revolution and includes a conical portion; and a shell comprising two shell portions each including a conical portion configured to come to bear in plane manner against the conical portion of the base.. . ... Poclain Hydraulics Industrie

Distribution device for a hydraulic machine

. . The device comprises an internal distributor to be disposed in a casing portion (10a), and comprising a body (15) that has an outside axial face (15b) provided with two grooves (17, 19) respectively for feed and for discharge. The distributor has distribution ducts (23a, 23b, 23c) that open out in a distribution radial face and a cylinder capacity selector that comprises a slide (50) suitable for being moved in an axial bore (53) for connecting the distribution ducts to one or the other of the grooves. ... Poclain Hydraulics Industrie

Drive assembly for a motor vehicle drive shaft

The present invention concerns a drive assembly for a motor vehicle drive shaft comprising au engine, a gearbox, a shaft (50) divided into two half-shafts coupled to a differential, characterised in that a hydraulic machine (10) is linked to the gear-box or to the differential in order to he driven by said link, the hydraulic machine (10) forming a hearing (100) for one of the half-shafts (54).. . ... Poclain Hydraulics Industrie

Distribution device for a hydraulic machine and a hydraulic machine fitted with such a device

The devices comprises a distributor (16) that presents distribution ducts opening out into a radial distribution face (16a), and a distributor-counterpart engaged in each other in such a manner that two main enclosures (18, 20) are provided between their opposite axially-extending faces. The device comprises a cylinder-capacity selector comprising two slides (24, 26) arranged after the other in a bore (22) of the element engaged in the other, to which are connected the main enclosures (18, 20) and at least some of the distribution ducts (30, 31). ... Poclain Hydraulics Industrie

Hydraulic machine having two cylinder capacities and a safety valve

The machine comprises distribution ducts connected to respective ones of first, second, and third enclosures (40, 42, 44), and a cylinder-capacity selector (21) suitable for being caused to take up a large cylinder capacity configuration in which the second enclosure (42) is connected to one of the main ducts (2), while the first and third enclosures (40, 44) are connected to the other main duct (1), and a small cylinder capacity configuration in which the second and third enclosures (42, 44) are connected to said one of the main ducts (2), while the first enclosure is connected to the other main duct (1). The machine further comprises a safety valve (150) having at least a first port (56) connected to said one of the main ducts (2), and a second port (58) connected to the third enclosure (44). ... Poclain Hydraulics Industrie

Hydraulic apparatus having an additional thrust section

. . The invention relates to a valve assembly (50) of a radial piston hydraulic apparatus (1). Said apparatus includes a cylinder block (4) insertable onto a shaft (2) by translation. ... Poclain Hydraulics Industrie

Hydraulic assistance system

The invention relates to a vehicle hydraulic assistance method comprising: two hydraulic devices connected therebetween by a supply line, a return line, a power boost source, and a tank, the power boost source being connected to the supply line and return line via a power boost line and taking the oil from the tank; and a vacuum valve including an input port, connected to the supply line and return line, and an output port connected to the tank. The vacuum valve has a first passing state and a second blocking state. ... Poclain Hydraulics Industrie








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